Thermostatic radiator-valve.



c. STICKLE.

THERMOSTATIC RADIATOR VALVE.

APPLICATION FILED DEC. 26, 19l3.

Patented May 18, 1915.

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COLE STICKLE, 0F INDIANAPOLIS, INDIANA.

THERMOSTATIC RADIATOR-VALVE.

Specification of Letters Patent.

Patented May 18,1915.

Application filed December 26, 1913. Serial No. 808,813.

tion of thermostatic valves for steam radiators or the like in thenature of a compound expansion radiator valve.

In the valve the thermostatic portion thereof is a carbon tube adaptedto be expanded or contracted by the heat of the steam and one feature ofthe invention consists in extending through said tube a metal rod insuch fashion that it will not interfere with the expansion andcontraction of said tube, but will reinforce the same and prevent itfrom warping, buckling or breaking.

One serious difliculty in devices of the kind heretofore has been due tothe short life of the thermostats because of their expansion andcontraction which would soon destroy the same and particularly in thekind herein shown when the thermostats would warp, buckle or bend and,therefore,

not only injure the thermostats but tend proportionately to reduce theoperative efliciency thereof.

Still another feature of the invention consists in the leveragecombination as herein shown, together with the valve and co6peratingparts.

The nature of the invention will be under- There is shown herein acasing 10 with an I inlet 11 and an outlet 12 leading from the side ofthe casing. Said casing has a leverage chamber 110 with one end thereofinternally threaded and closed by a removable nut 14. The inlet is on alower'level than the chamber 110 and the passageway to said chamber 110is through a valve seat 15 which is adapted to be closed by a ball'valve16. This valve is held from escape by pins 13 on the end of a horizontallever 17 which is fulcrumed to the casing by a pin 18 located, remotelyfrom the valve. Another lever 20 is fulcrumed on a pin 21 secured to thecasing and between the ends of said lever. The two levers 17 and 20 areparallel and the longer end of the lever 20 is pivoted to the shorterend of the lever 17 at 121. The thermostat bears ,down upon the shortend of the lever 20 so that when the ther-. mostat expands under theinfluence of heat from the steam, it will, through the com bined levers17 and 20, hold the valve 16 in the closing position.

The thermostat consists of a carbon tube 25 extending vertically withthe lower end provided with a metal cap 26 bearing against the short endof the lever 20. The upper end of thethermostat is held by a nut 2 whichscrews into the internally threaded upward extension of the casingforming a thermostat chamber 210. The outer end of said extension isclosed by a nut 28. The thermostat 25 is tubular and within it a metalrod 30 extends for substantially its entire length. Said rod is securedat its upper end in a nut 27 so as to be held centrally within thethermostatic tube 25 and it is of less diameter than the internaldiameter of said tube. This construction of there mostat, therefore, issuch that the tube 25,

compensation water, but when steam enters the valve, the thermostatexpands and through said leverage closes the valve 16 and keeps itclosedso that the compensation water cannot return and when the radiatoris cooling nothing will return or run back from the discharge line tothe radiator. 7

It is to be noted that the inlet is below the v discharge and the upperend of the valve seat 15 extends almost to the lower edge of T thedischarge. This isin order to prevent the valve seat from becomingchocked or in-' jured by steam and the steam enters a trap below saidinlet which is opened by a plug 35. Furthermore the thermostat is inalinement or located immediately over the valve and valve seat, as shownin Fig. 1.

The invention claimed is:

1. A thermostatic valve including a casing with an inlet opening, a ballvalve for closing said opening by gravity and so as to be opened by theincoming fluid, a lever for limiting the movement of said ball valve,and downwardly extending pins from said lever surrounding the ball valveto prevent the escape thereof during the operation of the lever;

2. A thermostatic valve including a casing with an inlet opening and adischarge opening, a tubular valve seat in the opening and projectingabove the wall of the casing and on a lower level than the dischargeopening, a ball valve on said seat for closing the inlet, athermostatically actuated lever fulcrumed on said casing with one endadapted when the thermostat is cooled to lie above the ball valve andpermit the opening of said valve by an incoming fluid and when thethermostat is heated to actuate said lever to hold the valve closed, anddownwardly extending pins from said lever surrounding the valve seat toprevent the escape of the valve when the lever is ele vated.

In Witness whereof, I have hereunto affiXed my signature in the presenceof the witnesses herein named.

COLE STICKLE.

Witnesses:

J. H. WELLS, O. M. MCLAUGHLIN.

flo'pies'of this patent may be obtained for five cents each, byaddressing the Commissionerof Patents. Washington, D. C.

